Locomotive.



F. J. DOYLE."

LOGOMOTIVB. APPLICATION FILED P1102 1, 1910.

Patented Dec. 2, 1913.

4 SHEETS-SHEET 1.

F. J. DOYLE. LOGOMOTIVE. APPLICATION FILED FEB.21, 1910.

Patented Dec. 2, 1913.

4 SHEETSSHEET 3.

.F. J. DOYLE.

LOCOMOTIVE. APPLICATION FILED FEB. 21, v1910.

Patented Dec, 2, 1913.

4 BEEETS-SHEET 4.

IIIIIII Eiiiiiiiiii O III/l ED STATES PA E T" ornron FRANCIS J. DOYLE, E CHICAG-U, ILLINOIS.

. MQi I I E.

To dl ltlihem iimaij concern-1" j I Ben knowntjhat I, FRANCIS J. D YLE, a

' 1 1 s theaii'mi'er Letters Patent; 7 'Ap ne ti h filed February-21,1910. Serial m5. 545,236.

' transverse horizontal sectional view taken centrally through Fig. 2; Figs. 4: and 5am, i

V PatentedDec.2,1 913. J

CltlZGIlJQf v the United "btates, residin'g'in' the city of Chicago, county-of Coo-k, andState of 1lli'n0is,'have invented certain new and useful Imp rovements in Locomotives, of which the following is a specification;

This invention'relates to improvements in locomotives and has among lts salient-obv I jects to provide a constructionfiin which a through: thecentral portion of the latter; maximu of; heating efliciency is obtained In t e p es t i e t on, the fuel is dis- 2 fromlthe fueL-andin whichfs'n10ke,"cinders, fi le of ing bu ned directly, and

-views similarto Figs. 2 and 3 respectively, a, but showing a slightly'modified Constructlong'Fig; 6'is anenlargedntransyerse er-,1- v'tical sectional view of the mechanism for re 5 1 is a: fragmentary sectional view, takerrsube stant ally at right angles to Fig. 16 and *strictingthe outlets of the fire tubes-i Fig. 7 T

soot, etc, are substantially eliminated-{ to provide a construction in which-thefuel body is distilled, 'as contradistinguished from a direct 'l: urning and in which the gases of distill'ation' are lgnited by the initial flame from the fuelbodygto provide a construction. in which the fire chamber is pro Vided with a single dependent bridge wall,

whic'li'vdivi'des the firech'amber into two zones, j'and also 1 holds. the gases'bi distilla'' tion in onefo'f 'said 'Zor esfuntil'they are heated to relatively "high-temperature tof provide a construction in -,wliichalnylpro'-" nounced ind iced" draft througlifi-Tthe' -fire B0 gineer; to; rovide ail-"improvedmechanism. Referring to'the drawings, ldesignates as; for'accomp is'hing the last namedobject'; to-a Whole the boiler; shellof the locomotive, provide means for forcing regrulated 'q'uan- 2 the front end, 3 the cab, d themain fire titiesof air into the fire zones, bothabove chamber, 5-thefstack- 6-the main driving", and below the grate level; to provide can; eylinde'rs,,Tthetsteam, fountain in the cab, 90'

- striiction which efiqct l elyutiliz es a"'niajor 8 .the fire tubes,;9 t;heash pit,- l0t he' steam chamber is" substantially eliiniiiat ,emnn

which the -outlet area of. the fire-tribes; is i restricted and vai'ied' at the will of then ,ing the temperature "ef aeswar 1n -the permitting marge p r'tio'n boiler, 'ihsteadb of said heat ni'tf t stack .and ther ,gp

structio'ri"whic s particularly p I use with stangi rd types of lbee ibtivesiand struction of the flatter Pr v d lm r fd, ,4 character re f 'rred'to.

The invention consists in thematters here? inafter 'desc'ribe'dfi and; i-moreig particularly pointed out in the appended claim.

In the drawings-Figure 1 is a,, {eragfiien on and deep fuel body should'be maintained within *fornied depe den 7 extends without"?neoessitating any substantial recon- I some dist I ,are-eompell d topass-downbv jfil I .g i the fuel bodyinto the, front chamber 16,' 110 the-gases of distillation ignited and mixed ;oxidize, the gases. ,Accordingly, a relativelyv -the,,.-fire. chamber, and theairf should be forced in at a nominal pressure, as, contradistingu-ishedfrom strong blastsf'llhe gases of distillation -are' held within the-'fire zgones until heated to such temperature as to ob-v Jvia'te smoke -and=soot', and are further re tardedpvuntil 'substamiially oxidized. F The -1:"

major portion- 0f the heat units generated (g are eliectively utilized in raising' the tem- :perature ofzthe waterin the boiler, and tl e fidistilled gasesare prevented from-passing "out through; thestack until, the' heat :units generated havesbeen so "utilized.

the re: c amber. is

We the grate: 1w

chamber into ,t'wo'nones,

I wall-member15,,i-whih 1e latterg and:lterminates Thi-s-100 resent inwhich may beitermed the combustion chamber, and are there substantially oxidized.

As shown in Figs. 2 and the wall or partition-member isformed offire brick,

which are. supported between horizontally extending water tubes 18. which communicate at elther end with the side Water legs 19 of the main boiler.

In order to prevent any pronounced induced draft through the fire chamber, the

' exhaust nozzle112 is provided with an extension 20, which projects into the lower end of the stack 5. Preferably a conical screen 21 incloses the extension 20, as shown more .I I clearly in Fig. '1.

The manner ofre'stricting the flue outlet area of the tubes may be described as fol lows: Tothe front tube sheet 22 is secured a cylindrical-hood 23 of slightly less diameter than the boiler shell, open at its forward end and provided with an inturned'fiange Within'this hood is fixedly mounted a front plate member 25, provided with a plurality of restricted apertures 26 which re%isjter with the corresponding ends of the tubes 8. Withfthe stationary plate 25 cooperates a movable plate 27, provided with a fpluralityof similarapertures29L; Thismovable plate is pivotally connected at its'axis to the stationary plate, as shown at 30, and is also provided atits periphery with a plu-' rality. of short segmental" slots. -31,- adapted to receive studs 32, carried. by the stationary plate. The upper ends of the .platesareapertured 'toreceive the steam pi e 19, the outer plate being provided? w t a sufli ciently large aperture to permit-.oflimited rotary nfovement'thereof. The arrangement is such that when the plates are in normal position, the apertures thereof register with each other, but when the movable plate; is rotated the apertures of-the stationary plate vmay be closed or partiallyclo ed, t th' tent desired. r

Describing now the mechanism'forrotating the movable. late, uplon the-upper side of the boiler shel is ri lyfixed a air of brackets, 33, 34, :to' whic is connects a.h0l-- low tubular'. standard 35, within which is mounted a rock shaft-.36.v The -lower endof upper end this rock shaft is connected to a bell crank lever 37, which actuates a,' connecting rod 38, the inner end of which. is securedias shown at. 39 to the'movable'plate. To the ae'shifting lever -40, .Lwhich extends throu h the-hollow handrail 41 into the cab, inor er that it may be accessible to the engineer. "It

' will benoted that'the connection 390i the;

rod 38 is eccentric to the axis of the movable- .rod will rotate the movable -plate.

modified construction .of the wall or said oftherock shaft 36 is connected. grate.

plate, and accordin ly the actuation of the In orderto supply a sufficient quantity of air to the fire, upon the running board of the engine is mounted a steam actuated pump. 42, which is connected by a steam pipe 43 to the fountain 7. Within the upper end of the .65

lower end of the' combustion chamber16.

The supply of air to the fire may, of course, be controlled by regulating the fan 44 and engine 42.

. In Figs. 4.and 5 I have shown a slightly tion within the fire chamber. In thls instance the wall 15 takesthe formof a water leg, which extends transversely ofthe. fire 'box, in the manner heretofore described, and?- particommunicates at its sides and upper endv "with the boiler-space. This construction not only adds'an in'creased heating S1.1rface,' but also prevents the partition from beingde jstroyed by heating, I

. The operation 0 the invent-ion isv appar-. ent from the. description and need not be described in detail. a I

.. Theinvention' is notto the details' I bf construction shown, except as set forth in the appended claim.

3 I claim as my invention: i

g In a locomotive,-the combination with. a fire chamber, a grate at'the lower end of said chamber and a closed ash pitbelow said grate, end of said from the roof of said 'fire' chamber and termnatin flues extending from the front firechamber', a wall depending within a short distance ofJ-the grate and "sposed in front of but spaced only a short distance-from the inlet endsof said flues', adjustable 'means for restricting the outlets of said fluea means for positively; forci air into said closed ash pita'nd into fie chamber and into the restricted throat between said depending wall" and p I FRANCIS JQDOYLEL Witnesses:

e. atom, FBANK L..BnLKNAr. 

